Our body contains an elaborate system of nerves which serve, in part, to inform us when an injury is occurring. Electrical impulses are relayed to the brain. It interprets these as PAIN and prompts the rest of the body to respond.
When someone suffers a serious burn injury sometimes both the epidermis and the underlying dermis (including its sensory nerve endings) are destroyed. The result is that no feeling remains in the affected area. It has been “cauterized,” and it can no longer sense pain.
There is an interesting analogy…